Science & Research
Investigational New Drug Applications and New Drug Applications (9/8/1995)
[Federal Register: September 8, 1995 (Volume 60, Number 174)] [Proposed Rules] [Page 46794-46797] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr08se95-24]
DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration 21 CFR Parts 312 and 314 [Docket No. 95N-0010] Investigational New Drug Applications and New Drug Applications AGENCY: Food and Drug Administration, HHS. ACTION: Proposed rule.
SUMMARY: The Food and Drug Administration (FDA) is proposing to amend its regulations pertaining to investigational new drug applications (IND's) and new drug applications (NDA's). The proposed rule would clearly define in the NDA format and content requirements the need to present effectiveness and safety data for important demographic subgroups, specifically gender, age, and racial subgroups. The rule would codify expectations that FDA has previously described in guidance. The proposed amendments would also require IND sponsors of drugs, including biological products, to characterize, in their annual reports, the number of subjects in a clinical study according to age group, gender, and race. The proposed rule does not address the requirements for the conduct of clinical studies and would not require sponsors to conduct any more studies than they have already conducted. It also would not require the inclusion of particular numbers of individuals from specific subgroups in any study or overall. The rule refers only to the presentation of data already collected. The scope of this proposal does not extend to requiring additional studies or data. DATES: Written comments by December 7, 1995. ADDRESSES: Submit written comments to the Dockets Management Branch (HFA-305), Food and Drug Administration, rm. 1-23, 12420 Parklawn Dr., Rockville, MD 20857. FOR FURTHER INFORMATION CONTACT: Deborah A. Wolf, Center for Drug Evaluation and Research (HFD-362), Food and Drug Administration, 7500 Standish Pl., Rockville, MD 20855, 301-594-1046. SUPPLEMENTARY INFORMATION: The proposed rule would amend the NDA content and format regulations at 21 CFR 314.50 to explicitly require that sponsors submit effectiveness and safety data by gender, age, and racial subgroups and other subgroups of the population of patients treated, as appropriate, such as patients with renal failure or patients with different levels of severity of disease. In the Federal Register of July 22, 1993 (58 FR 39406), FDA published a guideline entitled ``Guideline for the Study and Evaluation of Gender Differences in the Clinical Evaluation of Drugs.'' The guideline provided guidance on FDA's expectations regarding inclusion of both men and women in drug development, analyses of clinical data by gender, assessment of potential pharmacokinetic differences between genders, and conduct of specific additional studies in women, where indicated. The preamble to the guideline described the development of the agency's policy regarding the evaluation of clinical data by gender. The guideline noted that over the preceding decade there had been growing concern that the drug development process did not produce adequate information about the effects of drugs in women (58 FR 39406). Analyses of published clinical trials in certain therapeutic areas had indicated that there had been little or no participation by women in many of the studies. There had also been little study of the effects of such aspects of female [[Page 46795]] physiology as the menstrual cycle and menopause or of the effects of oral contraceptives and systemic progestins and estrogens on drug action and pharmacokinetics. The guideline also explained that concerns about the adequacy of data on the effects of drugs in women have arisen in the context of an increasing awareness of the need to individualize treatment in the face of the wide variety of demographic, disease-related, and individual patient-related factors that can lead to different responses in subsets of the population. Optimal use of drugs requires identification of these factors so that appropriate adjustments in dose, concomitant therapy, or monitoring can be made. The guideline was part of FDA's effort to address the need to gather and evaluate data from various subpopulations in clinical drug trials. The agency had previously addressed the need to develop information on the elderly in the 1989 guideline entitled, ``Guideline for the Study of Drugs Likely to be Used in the Elderly.'' That guideline provided similar guidance regarding inclusion of elderly patients in clinical trials and assessment of clinical and pharmacokinetic differences between older and younger patients. In 1983 and 1989, FDA examined the relative numbers of individuals from two important demographic subgroups, women and the elderly, in the data bases of NDA's. The agency found that, in general, the proportions of women and men included in the clinical trials were similar to the respective proportions of women and men who had the diseases for which the drugs were being studied, taking into account the age range of the population studied. The General Accounting Office (GAO) conducted a larger study of drugs approved during the period 1988 through 1991, and found similar proportions. Women were found to typically represent a majority of patients in NDA data bases of drugs used to treat conditions more common, or more commonly treated, in women, and a minority, generally a sizable one, in tests of drugs for conditions that occur predominantly in males in the age range usually included in the clinical trials. Although women have been included in the later phases of clinical trials, the agency believes that inclusion alone is not sufficient for adequate assessment of potential gender differences. There must be an effort to use the data to discover such differences, and the agency found that this effort was not made. Various documents published by the agency have reflected the need to examine gender as well as other characteristics for their effects on drug response. FDA's regulations on NDA content and format require the clinical data section of the NDA to include, among other things, ``An integrated summary of the data demonstrating substantial evidence of effectiveness for the claimed indications. Evidence is also required to support the dosage and administration section of the labeling, including support for the dosage and dose interval recommended, and modifications for specific subgroups (for example, pediatrics, geriatrics, patients with renal failure)'' and an integrated summary of safety. (See 21 CFR 314.50(d)(5)(v) and (d)(5)(vi)(a)). The examples of subgroups listed in Sec. 314.50(d)(5)(v) were not intended to be a complete list or to limit the subgroups for which data should be submitted. In 1988, in a guideline entitled, ``Guideline for the Format and Content of the Clinical and Statistical Sections of New Drug Applications,'' FDA discussed analyses of population subsets within NDA data bases to look for differences in effectiveness and adverse reactions to drugs. The guideline describes the population subsets to include subsets such as different genders, age groups, and races, and other subsets such as people receiving other drug therapy and people with concurrent illnesses. See, ``Guideline for the Format and Content of the Clinical and Statistical Sections of New Drug Applications'' at pages 32 and 40. The guideline describes the need for clinical data beyond the specific subgroups and categories of information set forth in the current regulations. The current wording of Sec. 314.50, while not intended to limit the analyses to be carried out does not fully reflect the need to present the safety and effectiveness data by subgroup and omits important subgroups, including gender and racial groups. The proposal would make explicit the agency's requirements concerning the data that are presented in NDA's. It would make clear the need to present safety and effectiveness data by gender, age, and racial subgroups to allow a determination, to the extent the data permit, of whether these factors affect results of treatment or alter dosing requirements. FDA believes that it is important to make such an explicit requirement. After the publication of the 1988 guideline, FDA and GAO examined data bases for NDA's to see whether the analyses to which the guideline refers were being conducted and submitted. Both of the examinations found that in about half of the cases the data bases were not being analyzed to determine whether there were differences in response to drugs between the two genders or among different racial groups and age groups. Thus, changes that the proposal would make to Sec. 314.50 would codify what the agency has already identified as important elements of clinical data. FDA also believes that to codify the need for presentations of data by subgroups will provide industry with clear information regarding potential consequences of the absence of subgroup data. The agency's regulation governing the filing of an application, which is set forth in 21 CFR 314.101, provides that the Center for Drug Evaluation and Research may refuse to file an NDA that, among other things, is not submitted in the form required under Sec. 314.50 or that is incomplete because it does not on its face contain information required under section 505(b) of the Federal Food, Drug and Cosmetic Act. 21 CFR 314.101(d)(3). The refusal to file policy attempts to direct FDA's resources to applications complete enough for review. The agency's ``New Drug Evaluation Guidance Document: Refusal to File'' describes situations in which FDA applies the provision in Sec. 314.101(d)(3) to make refusal to file decisions. In particular, the document explains that omission of critical data, information or analyses needed to evaluate effectiveness and safety or provide adequate directions for use is an appropriate basis for a refusal to file. Among the particular considerations in refusal to file decisions is a ``clearly inadequate evaluation for safety and/or effectiveness of the population intended to use the drug, including pertinent subsets, such as gender, age, and racial subsets.'' Thus, the proposal would allow sponsors to know from the beginning that data that are not presented with regard to gender, age, and racial groups are grounds for a refusal to file. It is important to note that the rule does not address the requirements for the conduct of clinical studies and that this proposal would not require sponsors to conduct any more studies than they have already conducted. It also does not require the inclusion of particular numbers of individuals from specific subgroups in any study or overall. The rule refers only to the presentation of data already collected. The scope of this proposal does not extend to requiring additional studies or data. Environmental Impact The agency has determined under 21 CFR 25.24(a)(8) that this action is of a [[Page 46796]] type that does not individually or cumulatively have a significant effect on the human environment. Therefore, neither an environmental assessment nor an environmental impact statement is required. Paperwork Reduction Act of 1980 This proposed rule contains information collections which are subject to review by the Office of Management and Budget (OMB) under the Paperwork Reduction Act of 1980. The title, description, and respondent description of the information collection are shown below with an estimate of the annual reporting and recordkeeping burden. Included in the estimate is the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Title: Investigational New Drug Applications and New Drug Applications. Description: The information submitted by respondents pursuant to the proposed regulatory revisions would assist the agency in monitoring the success of drug companies in enrolling in clinical drug trials subjects representing various subgroups of the population expected to use the drug being tested once it is approved and marketed and in better evaluating the safety and efficacy profiles of drugs for various subgroups. Description of respondents: Businesses, nonprofit institutions, small businesses.
Annual number of respondents
Average burden per response
Annual burden hours